# Met Éireann Issues Yellow Fog Warning for Twelve Irish Counties Visibility concerns prompt weather alerts across Connacht, northern Leinster, and parts of Ulster. - **Source:** [The Irish Times – News](https://www.irishtimes.com/ireland) - **Published:** 2026-11-08 - **Topic:** [climate](https://brifing.si/c/climate) - **Original article:** - **On Brifing:** https://brifing.si/s/6279b00a-6297-4016-8faa-88e6e974038d ## Expanded Weather Alert Met Éireann has issued a status yellow fog warning affecting twelve Irish counties starting Sunday at 9pm. The alert covers all five counties in Connacht, alongside Louth, Meath, Westmeath, Longford, and three Ulster counties: Donegal, Cavan, and Monaghan. This follows a broader warning that previously impacted twenty-five counties across the state. ## Visibility and Travel Risks The primary concern for authorities is significantly reduced visibility, which creates hazardous conditions for motorists and commuters. The warning remains active until Monday at 11am, potentially disrupting the start of the work week. Officials advise drivers to exercise caution on roads where dense fog patches may cause sudden, localized travel difficulties. ## Defining Yellow Warnings A status yellow warning is designated for weather conditions that are not considered exceptionally unusual but still pose localized dangers. Unlike higher-tier alerts, these warnings serve as a precautionary measure for the public. They highlight areas where specific environmental factors, such as thick fog, could lead to accidents or significant travel delays. ## Regional Weather Disparities While the fog warning targets specific northern and western regions, other parts of Ireland face different conditions. On Sunday night, areas outside the warning zone were expected to experience patches of rain moving in from the southwest. Notably, the UK Met Office has not issued any corresponding weather warnings for the region. ## Recent Climatic Context This fog event follows a trend of unusual weather patterns in Ireland. Recently, Met Éireann confirmed that the country recorded its sixth consecutive warmer-than-average October. Such persistent temperature anomalies often influence atmospheric stability, contributing to the formation of mist and fog patches that frequently affect visibility across the Irish landscape. ## Forecast for Coming Week The week ahead is projected to be milder but significantly wetter than the weekend. Rain and drizzle are expected to arrive from the south on Monday night, transitioning into potentially heavier rainfall by Tuesday and Wednesday. These shifts indicate a departure from the dry conditions observed during the daylight hours of Sunday. ## End of Week Outlook Meteorological projections suggest that the unsettled, wet weather will eventually give way to more stable conditions. By the end of the week, cooler and brighter weather is expected to prevail across the country. This transition marks a shift from the current damp, foggy environment toward clearer skies and lower overall temperatures. ## Scientific Monitoring Efforts Ongoing weather tracking relies on infrastructure like the M5 weather buoy located off the south coast. Scientists recently conducted a voyage to recover and maintain this critical equipment, which provides essential data for forecasting. Such efforts ensure that alerts for events like fog or rain remain accurate for the general public. ## Sources covering this story - https://www.irishtimes.com/ireland/2026/11/08/met-eireann-issues-renewed-status-yellow-fog-warning-for-12-counties/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._